KR940027345A - Low-Noise Block Converter for Narrow-Band Satellite Data Reception - Google Patents
Low-Noise Block Converter for Narrow-Band Satellite Data Reception Download PDFInfo
- Publication number
- KR940027345A KR940027345A KR1019930007660A KR930007660A KR940027345A KR 940027345 A KR940027345 A KR 940027345A KR 1019930007660 A KR1019930007660 A KR 1019930007660A KR 930007660 A KR930007660 A KR 930007660A KR 940027345 A KR940027345 A KR 940027345A
- Authority
- KR
- South Korea
- Prior art keywords
- phase
- noise block
- block converter
- narrow
- oscillation frequency
- Prior art date
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Abstract
본 발명은 인공위성을 이용한 데이타 전송용 소형지구국에 적용되는 LNB에 관련한다. 기존에는 LNB의 LO의 주파수 범위가 10.75GHz±1.5MHz이기 때문에 발진주파수 편차(1.5MHz) 이내의 협대역 데이타를 수신하는 경우 IF 신호로부터 베이스밴드의 복원이 어려웠다.The present invention relates to an LNB applied to a small earth station for data transmission using satellites. Previously, since the LNB's LO frequency range was 10.75GHz ± 1.5MHz, it was difficult to recover the baseband from the IF signal when receiving narrowband data within the oscillation frequency deviation (1.5MHz).
본 발명은 LO의 출력을 PLL 방식으로 제어하여 발진주파수의 편차가 수백∼수십KHz 내에서 로킹되게 함으로써, 베이스 밴드의 대역이 협대역인 즉, 데이타 레이트가 좁은 데이타의 수신시 베이스밴드의 복원을 정확하게 이룰 수 있게 된다.According to the present invention, the output of the LO is controlled by the PLL method so that the deviation of the oscillation frequency is locked within several hundreds to several tens of KHz. You can achieve this correctly.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제 2 도는 본 발명의 저잡음 블록콘버터의 회로 구성도.2 is a circuit diagram of a low noise block converter of the present invention.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930007660A KR940027345A (en) | 1993-05-04 | 1993-05-04 | Low-Noise Block Converter for Narrow-Band Satellite Data Reception |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019930007660A KR940027345A (en) | 1993-05-04 | 1993-05-04 | Low-Noise Block Converter for Narrow-Band Satellite Data Reception |
Publications (1)
Publication Number | Publication Date |
---|---|
KR940027345A true KR940027345A (en) | 1994-12-10 |
Family
ID=67137401
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019930007660A KR940027345A (en) | 1993-05-04 | 1993-05-04 | Low-Noise Block Converter for Narrow-Band Satellite Data Reception |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR940027345A (en) |
-
1993
- 1993-05-04 KR KR1019930007660A patent/KR940027345A/en not_active Application Discontinuation
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Legal Events
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WITN | Withdrawal due to no request for examination |